Features: Brand new and high quality Motherboard support: for Raspberry PI Pico development board, in-line connection. Expansion board interface: PICO pin interface, steering gear interface 4 SPI interface, IC row port.2.IC row pin interface x2, serial row pin interface 2 serial row port x2.SWD debugging interface, 3.3V power supply, 5VPower supply interface. Power supply: Power supply for PICO development board. Circuit protection: overcurrent and short circuit. Applications: PICO sensor experiment, PICO External device extension, PICO Robot project. Specifications: Steering gear interface: 4-way 5V steering gear interface Dedicated interface: PICO development board interface Built-in indicators: power indicator, 3.3V indicator, 5V indicator Size: about 95x58MM/3.74x2.28in Material: PC + metal Color: As shown Note: Only the above package content, other products are not included. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Package includes: 1 x Expander board